Home / 128,241.04-176,965.68-71,641.48

Finding the Fourth Proportional to 128,241.04, 176,965.68 and 71,641.48

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Solution

The fourth proportional to 128,241.04, 176,965.68 and 71,641.48 is: 98,861.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,241.04 : 176,965.68 = 71,641.48 : x
  2. Step 2: Convert to fraction form
    128,241.04/176,965.68 = 71,641.48/x
  3. Step 3: Cross multiply
    128,241.04x = 176,965.68 × 71,641.48
  4. Step 4: Simplify right side
    128,241.04x = 12,678,083,224.41
  5. Step 5: Solve for x
    x = 12,678,083,224.41/128,241.04
  6. Step 6: Final answer
    x = 98,861.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.